Door opener and closer



(No Model.) 2 Sheets-Sheet 2.

G. RISGHMULLE R. DOOR OPENER AND ULOQER- N0. 524,810. Patented-Aug. 21,1894.

THE nonms Prrms cu. PHOTO-LFIHO.- vusalncmu. n, c.

. Fig. 9 is an enlarged detail view of the door-" UNITED ST TES GEORGERISCHMULLER,OF'SAN FRANCISCO, CALIFORNIA.

DOOR" OPEN ERYAND CLOSER.

SPECIFICATION forming part of Letters Patent No. 524,810, dated August21 1894. Application filedMay 29,18 1. S91'ia1IT0.394,563 on model.)

To all whom it may concern:

Be it known that I, GEORGE RISCHMULLER, a citizen of the United States,residing at 934 B Capp street, in the city and county of San Franciscoand State of California, have invented a new and useful Door Opener andCloser, of which the following is aspecification.

My invention relates to improvements in door operating devices, and ithas for its objects to operate with facility a first-story, or streetdoor from an upper story; to make direct connection between the point ofapplication of the power and the object or door operated upon; toprevent the slamming orsudden closing of the door from currents ordrafts of air through the house; and to dispose or of aidwellingorhouse, showing the applica-" tion thereto of my invention or dooroperating device. Figs. 2 and 3 are enlarged side and end detail viewsof the foot-lever. Figs. 4 and 5 are similar views of the door actuatinglever-mechanism. Fig. 6 is a horizontal section on the line 00-00 ofFig.4. Figs. 7 and 8 are broken side and sectional elevations of thedoor-jamb, showing the latch disengaging dog, with its operatingmechanism.

actuating lever-mechanism.

In the embodiment of my invention, I employ a foot-lever B fulcrumedupon a pivot-.

stud of a bracket A,screwed or secured to a support C let into the wallat the head ofthe stair-case, leading from the ground or first floor tothe next upper floor. The foot-lever B has connected to it a stout wireD extending down between the stair-case and the wall, as indicated indotted lines, thus incasing. it and taking it out of view.

E is a lever or pivoted pendent bar, having the lower end of the wireDconnected to it and hung or pivoted upon a pivot 1) bearing a Y in theupper arm of a bracket H, screwed or secured to a suitable support, alsoarranged between the wall and the stair-case out of sight.' This lever Ehas at its lower end a cross piece f provided at one end with a pendent,apertured stud f to the lower end of which the wire D is immediatelyconnected, the opposite end f 3 of said cross-piece fperformingafunction presently seen.

F is a right angled lever hung or pivoted upon the same pivot b as thelever E and having its rear lower end, provided with a lateral stud a,designed to be engaged by the end f? of the lever E above referred tofor a purpose made apparent farther on. The opposite or forward lowerend of the bell-crank lever Fjis linked, as at c, to one endofahorizontal bell-crank G, pivoted or hung upon-a pivot-stud of thebracket H, the opposite free endof the bell-crank G being linked, as atd, to the rear end of a right angled lever I, suitably pivoted to thedoor, it may be between cheek-pieces fof a bearing-plate K,secured tothe street-door near its hinged edge, at the lower corner. The freeinner end of the lever I has a cylindric portion or footi adapted toengage one arm of a right-angled lever P, hung upon a pintleor pivot 19supported upon the vertical plate 0 secured or screwed to the hingedpost of the door-frame.

The lever P-has connected to it, at one end, a wire g, passing betweenthe carpet-strip and floor and connecting with an angle-lever Q, pivotedin a plate R, secured to the door-jarnb, near the floor.

S, is a dog, hung or pivoted upon a pintle or cross-rod, in the openingof a frame-like casting or plate U, secured flush with the catch orsocket plateU' fastened to, and flush with, the door-jamb, said dogbeing connected, at its upper end by means of a wire h, with the upperend of the angle-lever Q. The pintle or cross-rod of the dog S, alsoaffords a support for a coiled spring T, one end of which catches orbears upon one edge of the opening of the plate U, while the other endbears upon the outer or upper end of the dog S, to retain the latternormally in the position shown in Fig. 8, with its inner or acting endretracted, said end of the dog being directly opposite the point ofreception for the door latch.

M is a spring carried by and fastened at one end to the lower end of arod N, suitably supported in an apertured arm of the plate 0, the upperend of said rod being squared and let into an aperture of said plate andhaving passed through it a pin 6, adapted to engage any one of two ormore studs e upon the plate 0, to permit, by the application of a wrenchto said squared end of the rod N, the regulating of the tension of thespring M, as may be required. The rod N is in alignment with the doorhinges f, one end of the spring M being connected to the plate Kfastened to the door and the other end of said spring being connected tothe lower flattened end of said rod.

In operation it will be seen that by applying pressure through the footto the foot-lever B the wire D will be drawn upon, pulling the lever Erearward, and causing the end f of its cross piece f to engage thelateral stud a of the lever F, in turn similarly moving the latter, andmoving, through the link a and bell-crank G, the lever I. The lever Iwill thus force inward one arm of the lever P causing through the Wire 9the actuation of the lever Q, pulling through the Wire h, the outer keepit closed, being the reverse of the action of the foot-lever upon thedoor in opening the latter, it'is therefore apparent that, by holdingthe foot upon said lever, the door can be held open at any requiredangle,and by gradually removing the pressure of the foot from saidlever, the door is prevented from slamming. It will also be observedthat, by having the levers E and F separate or independent of eachother, the opening of the door directly by hand will not interfere withand be liable to cause the bending of the wire D, a would otherwise belikely to occur.

I claim and desire to secure by Letters-Pat- 5o ent- 1. In a dooroperating device, the combination of a foot-lever, a lever or pivotedpendent bar having a cross-piece at its free end, a right-angled leverhaving'one arm provided with a lateral stud engaged by one end of saidcross-piece, means for connecting said footlever and said cross-piece, abell-crank connected to said right angled lever, a lever hung upon thedoor and connected to said bellcrank, an anglelever hung upon thedoorjamb and engaged by the lever hung upon the door, and a dog adaptedto engage the doorlatch and operated by said angle-lever, substantiallyas set forth.

2. In a door operating device, the combination of a foot-lever, apendent pivoted bar having at its free end a cross-piece, means forconnectin said foot lever and said crosspiece, a right-angled leverhaving a lateral stud engaged by one end of said cross-piece, abell-crank connected to said right-angled leve'r, a lever hung upon thedoor and connected to said bell-crank, an angle-lever hung upon thedoor-jamb and engaged by the lever hung upon the door,thespring-actuated dog hung in a plate upon the door-jamb and adapted toengage the door-latch,.anda lever hung at the bottom edge of thedoor-jamh and having connection with the lever hung upon the door-jamband with said dog, substantially as specified.

' GEORGE RISOHMULLER.

Witnesses:

FRANK P. LATSON, LINCOLN SONNTAG.

